A charging device for charging an energy accumulator unit, in particular a battery pack, of a hand-held power tool. The charging device includes a cooling device for cooling the energy accumulator unit, in particular the battery pack, a charger housing, which at least in sections forms an outer housing, and a receptacle unit which may detachably accommodate the energy accumulator unit, and is provided to accommodate the energy accumulator unit in a connected state and/or hold it at the charging device. The cooling device is provided to form an airflow directed onto the energy accumulator unit in such a way that the airflow at least in sections flows around the energy accumulator unit.
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2. The charging device as recited in claim 1, wherein the energy accumulator unit includes a battery pack.
3. The charging device as recited in claim 1, wherein the cooling device includes the fan element to produce the airflow directed onto the energy accumulator, the airflow being guided past the energy accumulator unit.
This invention relates to a charging device for an energy accumulator, such as a battery, with an integrated cooling system to manage heat generated during charging. The cooling device includes a fan element that produces an airflow directed onto the energy accumulator. The airflow is guided past the energy accumulator unit to dissipate heat efficiently. The charging device may also include a housing with an inlet and outlet for the airflow, ensuring proper ventilation. The cooling system may further incorporate additional components, such as heat sinks or thermal interfaces, to enhance heat transfer from the energy accumulator to the airflow. The fan element is positioned to optimize airflow distribution, ensuring uniform cooling across the energy accumulator. The design prevents overheating, extends the lifespan of the energy accumulator, and maintains safe operating conditions during charging. The cooling device may be adjustable to accommodate different charging rates or environmental conditions, improving overall system reliability.
4. The charging device as recited in claim 1, wherein the airflow is directed onto the energy accumulator unit.
5. The charging device as recited in claim 1, wherein the charging device includes the air outlet opening to orient the flow direction of the airflow, the flow direction forming a flow angle of at least 5°, in relation to a surface normal of the outer housing.
7. The charging device as recited in claim 1, wherein the airflow is guided to flow out of the charging device to cool the energy accumulator unit.
8. The charging device as recited in claim 5, wherein the charging device includes the guide recess to guide the airflow from the fan element to the air outlet opening.
9. The charging device as recited in claim 1, wherein the charging device is configured to charge the energy accumulator unit in a connected state and to cool the energy accumulator unit using the cooling device.
10. The charging device as recited in claim 1, wherein the energy accumulator unit includes multiple rechargeable battery cells which are connected using a cell connector.
This invention relates to a charging device for rechargeable battery cells, addressing the challenge of efficiently managing and connecting multiple battery cells within an energy accumulator unit. The device includes an energy accumulator unit that contains multiple rechargeable battery cells, which are interconnected using a cell connector. The cell connector ensures proper electrical and mechanical coupling between the battery cells, facilitating efficient energy storage and transfer. The design may also incorporate features from dependent claims, such as a housing that protects the battery cells and connector from environmental factors, or a control system that monitors and regulates charging processes to optimize performance and safety. The invention aims to improve the reliability, durability, and efficiency of battery-powered systems by providing a structured and secure way to integrate multiple battery cells into a single functional unit. This approach is particularly useful in applications requiring high energy density and stable power output, such as electric vehicles, portable electronics, and renewable energy storage systems. The cell connector may include conductive elements, insulation, and mechanical fasteners to ensure stable connections and prevent short circuits or other failures. The overall system may also include temperature sensors, voltage regulators, and balancing circuits to maintain optimal operating conditions.
11. The charging device as recited in claim 10, wherein the cell connector is situated in or at a side wall of the outer housing, the energy accumulator unit being situated in a charging state on the charging device so that the airflow flows against the side wall of the charging device.
12. The charging device as recited in claim 5, wherein the air outlet opening is configured to orient the flow angle of the flow direction of the airflow as a function of the energy accumulator unit.
14. The system as recited in claim 13, wherein the energy accumulator unit includes a battery pack.
16. The charging device as recited in claim 15, wherein the cooling device includes two fan elements, which function as cooling elements, each of which is provided to form an airflow directed onto two opposite sides of the battery pack housing.
A charging device for battery packs includes a cooling system designed to manage heat generated during charging. The cooling system comprises two fan elements that act as cooling elements, each directing airflow onto opposite sides of the battery pack housing. This dual-fan configuration ensures balanced cooling by addressing heat dissipation from multiple surfaces, preventing localized overheating and maintaining optimal battery performance. The fans are positioned to create airflow paths that efficiently remove heat from the battery pack, enhancing safety and longevity. The cooling system may also include additional components, such as heat sinks or thermal interfaces, to further improve heat transfer. The charging device is particularly useful in high-power applications where rapid charging generates significant thermal energy, requiring robust cooling solutions to maintain safe operating temperatures. The dual-fan design ensures uniform cooling across the battery pack, reducing thermal stress and improving overall efficiency.
17. The charging device as recited in claim 16, wherein the charger housing includes at least one air outlet opening that is spaced apart from the receptacle unit.
This invention relates to a charging device designed to manage heat dissipation during charging operations. The device includes a charger housing that contains a receptacle unit for connecting to an external power source and a power output unit for delivering power to a connected device. The housing is structured to facilitate airflow and heat dissipation, particularly during high-power charging. A key feature is the inclusion of at least one air outlet opening in the charger housing, positioned separately from the receptacle unit. This design ensures that heat generated during charging is effectively vented away from the connection points, preventing overheating and improving safety. The air outlet opening may be strategically placed to optimize airflow dynamics, ensuring efficient cooling without compromising the structural integrity or usability of the device. The charging device may also incorporate additional cooling mechanisms, such as fans or heat sinks, to further enhance thermal management. The overall design aims to support high-power charging while maintaining safe operating temperatures, addressing the challenge of heat buildup in compact charging systems.
18. The charging device as recited in claim 15, wherein the charger housing includes at least one air outlet opening that is spaced apart from the receptacle unit.
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March 25, 2019
November 8, 2022
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